this stack will help you learn the basics about atoms
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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Atomic Number | Number of protons and electrons in an atom
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Atomic Mass | total weight of protons and neutron (everything in the nucleus)
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atom | smallest unit of matter
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neutron | a subatomic particle that has no charge and that is found in the nucleus of an atom
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proton | a subatomic particle that has a positive charge and that is found in the nucleus of an atom. Represented by the atomic number
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electron | a subatomic particle that has a negative charge- found outside the nucleus
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element | A pure substance made up of only one kind of atom
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compound | a substance made up of atoms of two or more different elements joined by chemical bonds
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mixture | a combination of two or more substances that are not chemically combined
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molecule | a group of atoms bonded together
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pure substance | a substance that cannot be separated by physical means; elements and compounds
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homogeneous mixture | a mixture that is evenly mixed; also called a solution
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precipitate | an insoluble substance that is produced as a result of a chemical reaction
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heterogeneous mixture | a mixture that is unevenly mixed
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
meekinsscience
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